#root,html,body{
  width: 100%;
  height:100% ;
}
#root{
  display: flex;
  flex-direction: column;
  .topfixed{
    height: 50px;
    line-height: 50px;
    display: flex;
    justify-content: space-around;
  }
  .home{
    flex: 1;
  }
}
